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Chapter 8 - Cherry's Experiments (1953) p. 343 IP (Implications of…
Chapter 8 - Cherry's Experiments (1953) p. 343 IP
Conducted experiments to determine exactly what information allows participants to separate out two spoken messages that are presented together
Experiment 1
Mixed messages - both ears hear the same
Experiment 2
Simultaneous messages in different ears
Experiment 3
Same message in both ears with slight delay
Suggests extracting meaning
Results
Mixed speech condition
Different messages could be identified by the listener (participants did find it difficult and tapes were played up to 20 times)
writing the responses made the task easier
Implied 'content' of message influenced ability to attend to and seperate out th etwo messages
simultaneous condition
Could recall message in 'right ear' when asked to (while other message was being played in the other ear).
Left ear they were told to ignore
Participants were unaware of it's content and could not distinguish if language had changed from english to german
Implications of Cherry's findings for Broadbents model
Meaningful messages were easier to seperate out from nonsence ones
Model became more complex
Version published in 1958 stated that feedback from memory, prior experience and expectations can influence the workings of the selective attentional filter
Supported the notion that material can be filtered on the basis of simple physical features, such as what ear the sound is played to
Suggested that some processing of the stimulus (such as content and meaning) could take place before it is selected for attention
Participants were aware of the message being delayed in experiment 3